of chicago



LSG-2,291

Filed Sept 7. l 26 March 13, EL/g1 Patented Mar. 13, 1928.

Unirse srarss earner orifice CESAR-LES L. BASTIAN, l0F CI-ICAGO, ILLINOIS, ASSIGNOR TO THE BASTIAN-BLESSING COMPANY, OF CHICAGO, ILLINOS, .A CORPORATION OF ILLINOIS.

VALVE.

Application iled September 7, 1926.

This invention relates to valves of the kind which are used on the supply tanks orV cylinders for high pressure-gas, and its object is to provide a novel and ethcient valve :tor this purpose which will prevent leakage ot the gas from the tank.

Another object of the inventionis to pro. tect Vthe diaphragm of ther valve against damage by providing fixed stops which limit the movements for opening and closing the valve.

And a further object is to provide a novel and improved valve of substantial construction, which is opened and closed by direct manual adjustment, which operates in fixed limits and in definite guides, and which is tree from packing, springs and other similar parts which sometimes are or become unreliable and ineiiicient in use. l

ln the accompanying drawings illustrating a selected embodiment ot the invention:

Fig. 1 is a sectional view ot the com plete valve. i

Fig. 2 is a detail perspective view of the hand Wheel screw stem.

Fig. 3 is a detail perspective view ot the valve member and diaphragm. n

Fig. l is a detail section on the line 1 -l Y of Fig. 1. y i

Referring to the drawings the valve body 5 has a threaded end 6 adapted to be screwed into the gas supply tank and it is provided with a gas passage 7 `extending through the seat 8 and communicating with the valve chamber 9. A threaded nipple 10 is adapted to be connected with means for charging or discharging the tank and this nipple is provided with a passage 11 which communicates with the valve chamber 9 preferably7 adjacent to the bottom thereof to provide nearly as possible an unobstructed and unmterrupted communication with the tank. A vvalve member 12 is arranged in the valve chamber 9 and it has reduced and threaded ends and a hexagon sha ed intermediate part whose edges 13 (Fig. l engage the wall of the chamber. 9 and form a `positive guide tor the valve member to prevent it from tilting and to retain it in proper position. A valve disk 14 is secured by a threaded Y collar 15 to the lower end of the valve member 12 and itis provided with a shoulder 14 to be engaged by a shoulder 15 on the collar yvhereby the disk isr securely held With.-

Seral No. 133,795.

8, which projects slightly above the bottoni wall of the valve chamber, and the diameter of the contact tace of the disk is greater than the diameter of the contact face of the seat.

The body of the valve is recessed at its upper end to provide al chamber 16 for the diaphragm 17 which is secured on the upper reduced end ot' the valve member 12 by a nut 18 and is clamped at its margin against a shoulder 19 at the bottom of the recess-by a plug 20 screw threaded in the recess. rhe plug has a threaded opening 21 to receive the threaded stem 22 of a hand wheel 28. The lower end ofthe stem is slidably engaged with the upper end of the valve member 12 by a head 24 on the valve member which engages a slot 25 inthe stem wherebyv the two parts may move conjointly in a longitudinal direction and the stem may be moved rotatively with the hand wheel relativo to the valve member. Thus the hand wheel may be operated to directly move the disk lepaway from or against the seat 8 'to open or close the valve, Without moving the disk or the valve member 12 rotatively. The boss 26 ot the hand wheel is guided in a recess 27 in the plug 20 and the upper end 22 of the stem 22 is rectangular in shape and is rigidly secured in an opening 28 in the hand Wheel by a screw 29.

The valve yis free from packing, springs and other delicate and unsubstantial parts which may be initially inefficient or become so while the valve is in use and render it ineffective. The valve is opened and closed by direct engagement of the hand wheel stem with the valve member, the opening and closing movement of the valve being complementary to the outward and inward movement of the hand'wheel and in no respect dependent upon the diaphragm. The diaphragm is clamped on the valve member by the nut 18 and against the shoulder 19.by Athe plug 2O to form a iiexible joint which is gas tight and prevents the escape of gas at Vthe top of the valve. The function of the diaphragm is solely to providea gas tight closure for the valve chamber 9 at its upper end, land to-avoid the use of packing.

These valves must hold a pressure of two thousand pounds in full tanks and they are often subjected. to rough. uSge in handling tight closure for the upper end of the valve chamber, and means including the nut to provide a positive stop for limiting the movement of the valve member and disk away from the valve seat.

5. A valve comprising a body having a valve chamber' therein, an inlet passage to said :chamber and an outlet passage from said chamber, a seat in said chamber around the inlet passage, a Valve member having a reduced upper end, a collar threadedly en-k gaging said member a disk carried by said' collar to engage said seat, a diaphragm, a nut on the reduced end of the valve member and engaging the diaphragm to form a gas tight closure for the upper end of the valve chamber,I and positive stops including the nut and collar for limiting the opening and closing movements of the valve member to prevent damage to the diaphragm.

6. A valve comprising a body having a valve chamber therein, an inlet passage to said chamber and an outlet passage from said chamber, a raised seat in Ysaid chamber around the inlet passage, a valve member, a disk, a collar screw threaded on the valve member and securing the disk thereto, a diaphragm connected to the'valve member and forming a gas tight closure for the upper end of the valve chamber, positive stops threadedly engaging the valve member Vor limiting the opening and closingl movements of said valve member, and manually operated means connected directly to the valve chamber for moving said valve member vto open and to close the valve.

7. A valve comprising` a body having a valve chamber therein, an inlet passage to said chamber and an outlet passage from said chamber, a seat in said chamber around the inlet passage, a valve member having a hexagonal intermediate part to engage the walls of the chamber, a disk carried by said member to engage said seat, a diaphragm secured rigidly and gas tight on said valve member, a. plug engaging the margin of said diaphragm to clamp the diaphragm to the body to form a gas tight closure for the upper end of the valve chamber, a hand wheel recessed in said plug, a stem for the hand wheel screw threaded in the plug and extending above the recessed part of the plug, and a detachable connection between the valve member and the stem.

8. A valve comprising a body having a valve chamber therein, an inlet passage to said chamber and an outlet passage from said chamber, a seat in said chamber around the inlet passage, a valve member having a hexagonal intermediate part to engage the walls of the chamber, a collar on said member, a disk carried by said collar to engage said seat,I a nut, a diaphragm secured gas tight on said valve member by said nut, a plug engaging the margin of said diaphragm and surrounding the nut to clamp the diaphragm to the body to form a gas tight closure for the upper end of the valve chamber, a hand wheel having its lower end recessed in said plug, a stem for the hand Wheel screw threaded in the plug, and a flange and slot connection between the valve member and the stem whereby the hand wheel and stem may move rotatively relative to the valve member to move the valve member longitudinally to and from said seat.

CHARLES L. BASTIAN. 

